Inverter-Inverter Communication Operation - Omron 3G3MX2 User Manual

Network Protocol Reference
Note 7
Note 8
Note 9
Note 10 As EzCOM source and destination register, please set the number minus one
Note 11 Just 0901h should be mention.
Note 12 If above parameter is changed, the inverter power must be rebooted in order
314
munication timeout on administrative inverter. In this case, please power off/
on or reset (on/off RES terminal) to recover.
If EzCOM starting trigger is set as input terminal (C100=00), be sure to con-
figure 81 in one of input terminals.
If EzCOM starting trigger is set as always (C100=01), administrative inverter
starts to send the data immediately after power on. In case the establishment
of the inverter to be assigned as master of delays and fail to receive the com-
mand to change the master, the data cannot be sent from master and admin-
istrative inverter time-outs. When C100=01 selected, please be sure to power
up the administrative inverter at last after reconfirming the establishment of
inverters other than administrative inverters.
Although slave addresses are set in a master inverter, data is sent as broad-
cast address (00). If a slave inverter receives data to another slave, it will be
ignored.
from the value listed in the table in "modbus data listing".
to activate new parameters. Instead of rebooting, turning ON/OFF of reset ter-
minal works as same.
Basic function (in case the number of data is 1 (P140=1))
• A master inverter sends data in holding register P143 of the master to a
slave inverter of address P141 and overwrites on holding register P142.
• A master inverter is changed to the next inverter, and repeats same pro-
cedure according to setting of new master inverter.

Inverter-Inverter Communication Operation

1. The Master Inverter sends data to each slave inverter according to the
items set in the Master Inverter.
2. The Management Inverter sends a master switching command and the
Master Inverter changes.
3. The next Master Inverter sends data to each slave inverter in the same
manner as in 1st point.
4. The 2nd and the 3st points are repeated.
Note Since the Inverter communication is performed in the form of broadcasting
(station number: 00), all communication data are sent to all stations. Accord-
ingly, while a slave not specified as the recipient of the Master also receives
data, if the data is not addressed to that slave the data will be discarded in the
slave.
Section B-3